Answered Question - Disney Parks Moms Panel

Yes! Traveler's Cheques are easily cashed throughout the Walt Disney World Resort.
If you wish, you can cash your Canadian or US$ Traveler's Cheques at your Resort Hotel front desk in exchange for US Cash to carry with you into the parks.

Alternatively, you may decide to set up charging privileges on your Resort Room account and then pay the balance at the front desk using your traveler's cheques.

Guest Relations locations inside the Parks, Water Parks and at Downtown Disney can also exchange your Traveler's cheques for you. Be sure to have a piece of photo ID with you when you're planning to cash in your cheques.

Last but not least, you could opt to exchange for cash and then purchase a Disney Gift Card from any merchandise retail location in your resort or in the parks, and use that for your daily purchases.

I hope this information is helpful to you Catherine.
Feel free to write me back again any time. It's a pleasure to assist you as your Magical vacation approaches!

Panelists have received/will receive a Walt Disney World® Resort, Disney Cruise Line®, Disneyland® Resort or Disney Vacation Club® vacation for panelist and up to three family members and/or park tickets for their participation on the Disney Parks Moms Panel. The views expressed in the Panel are those of the panelists, who are independent contractors. These views are not intended to reflect the opinions of Walt Disney Parks and Resorts Online, its affiliates, its management, its agents or its employees and have not been reviewed or approved by Walt Disney Parks and Resorts Online prior to posting.